code: def process_wordpiece_token_for_alignment(t):
      """Add word boundary markers, removes token prefix (no-space meta-symbol — '##' for BERT)."""
      if t.startswith("##"):
          return re.sub(r"^##", "", t)
      else:
          return "<w>" + t
  
file_path: jiant/jiant/utils/tokenization_utils.py
imports: import re
  from typing import Sequence
label_desc: Use image node_id 6 for calling a global function with example usage: process_wordpiece_token_for_alignment(t) and returns: re, unknown